CN209899346U

CN209899346U - Multispectral oral cavity observation instrument based on CMOS array filter

Info

Publication number: CN209899346U
Application number: CN201920294641.0U
Authority: CN
Inventors: 韩愚
Original assignee: SHANGHAI HANDI MEDICAL EQUIPMENT Co Ltd
Current assignee: SHANGHAI HANDI MEDICAL EQUIPMENT Co Ltd
Priority date: 2019-03-08
Filing date: 2019-03-08
Publication date: 2020-01-07
Anticipated expiration: 2029-03-08

Abstract

The utility model discloses a multispectral oral cavity visualizer based on CMOS array filter. The VCM zoom lens comprises a camera shooting handle, a lens base and a VCM zoom lens, wherein a CMOS image sensor is arranged at the rear end of the lens base; the camera shooting handle is internally provided with a PCB (printed circuit board); the VCM zoom lens is connected with the PCB circuit board through the CMOS image sensor; the camera shooting handle is provided with an image capturing button connected with the PCB; the CMOS image sensor is a CMOS image sensor with a color filter array, namely, the CMOS image sensor is directly plated with a color filter on each pixel of a CMOS pixel array, and each pixel corresponds to a tiny color filter. The CMOS image sensor with the color filter in the enhanced array arrangement reduces the generation of Moire and mottle; an optical low-pass filter is not needed in the lens, so that the sensor can capture complete fine image quality, and multispectral acquisition from blue light to infrared can be realized.

Description

Multispectral oral cavity observation instrument based on CMOS array filter

Technical Field

The utility model belongs to the technical field of medical instrument, a multispectral oral cavity visualizer based on CMOS array filter is related to.

Background

The digital oral cavity observation instrument (oral cavity endoscope) is used for local photography, examination, diagnosis and the like of the oral cavity, and brings brand new operation convenience and comfort to dentists and patients. The camera shooting device is provided with a camera shooting handle with the largest visual angle, and a smooth and small handle head at the front end of the camera shooting handle can easily go deep into the oral cavity of a patient to help detect decayed teeth at an occlusal part or an adjacent surface in the oral cavity of the patient and even decay teeth at an initial stage ignored by X-rays.

The digital oral cavity observation instrument is internally provided with a double-key image capturing button, the imaging of the digital oral cavity observation instrument is realized by a CMOS image sensor, the digital oral cavity observation instrument is generally provided with a USB interface, only any computer with the USB interface is connected with the digital oral cavity observation instrument, the proper angle (of the part to be shot) is found by using the full dynamic image searching function of an endoscope, and then the image capturing button is pressed, so that an ideal image can be obtained, and the maximum effective pixel of 130M can be captured.

The existing digital oral cavity observation instrument is generally provided with a VCM zoom lens at the front end of a camera shooting handle, namely, the VCM zoom lens is generally adopted for automatic zooming and focusing in the prior art, and then an image shot by the VCM zoom lens is transmitted through a CMOS image sensor; in addition, only one or two kinds of light, such as visible light and blue light, can be obtained by the way that the VCM zoom lens works with the CMOS image sensor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide one kind and can realize from the multispectral oral cavity visualizer based on CMOS array filter that obtains of blue light to infrared equal multispectral.

The technical scheme of the utility model as follows:

a multispectral oral cavity observation instrument based on CMOS array filter comprises a camera shooting handle; the front end of the camera shooting handle is provided with a lens base, the front end of the lens base is provided with a VCM zoom lens, and the rear end of the lens base is provided with a CMOS image sensor; a PCB circuit board with image acquisition, processing and transmission functions is arranged in the camera shooting handle; the VCM zoom lens is connected with the PCB circuit board through the CMOS image sensor; the camera shooting handle is provided with an image capturing button, and the image capturing button is connected with the PCB; the CMOS image sensor with the color filter array is a CMOS image sensor with the color filter array, and the color filter is directly plated on each pixel of the pixel array of the CMOS image sensor. That is, the CMOS image sensor is composed of an array of pixels, on each of which a color filter is directly plated, one minute color filter for each pixel. That is, the pixel array of the CMOS image sensor is coated with a plurality of minute color filters arranged in an array.

Furthermore, an ISP image processing chip is arranged on the PCB circuit board; the VCM zoom lens is connected with an ISP image processing chip on the PCB circuit board through the CMOS image sensor.

Furthermore, the oral cavity observation instrument is provided with a USB interface and can be connected with a computer or a display through the USB interface.

Furthermore, the PCB circuit board comprises a CPU central processing unit, an ISP image processing chip and a display output module; the CMOS image sensor is respectively connected with a central processing unit on the PCB circuit board and a signal input port of the ISP image processing chip; the image capturing button is respectively connected with a central processing unit on the PCB circuit board and a signal output port of the ISP image processing chip; and the display output module on the PCB is connected with the USB interface.

Further, the image capturing button is a double-key image capturing button.

The utility model has the advantages that:

in the utility model, a CMOS image sensor with color filters arranged in an enhanced array is adopted; the CMOS image sensor with the color filter arranged in the enhanced array is a CMOS image sensor with the color filter directly plated on each pixel of a pixel array of the CMOS image sensor. That is, the CMOS image sensor is composed of an array of pixels, on each of which a color filter is directly plated, one minute color filter for each pixel.

The color filter array of the brand new CMOS image sensor can solve Moire fringes. In the utility model, the CMOS image sensor with the color filter arranged in the enhanced array is adopted, so that the generation of Moire and mottle is reduced; the lens does not require an optical low pass filter, allowing the sensor to capture the full, "unfiltered" resolution and fine image quality of the XF lens.

The utility model discloses a multispectral oral cavity visualizer based on CMOS array filter, the advantage is as follows:

1. the image information with a larger spectral range can be completed by single photographing, and more diagnostic information can be provided for doctors;

2. the VCM zoom lens can only obtain one or two of visible light and blue light generally, and multispectral obtaining from blue light to infrared can be realized by the color filter array;

3. the volume can be greatly reduced;

4. no optical filter is required to be switched;

5. the filter is directly plated on each pixel of the pixel array of the CMOS image sensor, so that focusing can be more accurate and images can be finer.

Drawings

Fig. 1 is a schematic structural view of a multispectral oral cavity viewer based on a CMOS array filter according to the present invention;

fig. 2 is a schematic structural diagram of a CMOS image sensor with a color filter array according to the present invention.

In the figure: 1. VCM zoom lens 2, lens base 3 and CMOS image sensor

4. Image capture button 5, PCB circuit board 6, image processing chip

7. USB interface 8 and color filter

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

Examples

As shown in fig. 1, the utility model relates to a multispectral oral cavity observer based on a CMOS array filter, which comprises a camera handle; the front end of the camera shooting handle is provided with a lens base 2, the front end of the lens base 2 is provided with a VCM zoom lens 1, and the rear end of the lens base 2 is provided with a CMOS image sensor 3 (a multispectral sensor); a PCB circuit board 5 with image acquisition, processing and transmission functions is arranged in the camera shooting handle; the VCM zoom lens 1 is connected with a PCB circuit board 5 through a CMOS image sensor 3; the camera shooting handle is provided with an image capturing button 4, and the image capturing button 4 is connected with a PCB 5.

As shown in fig. 2, the CMOS image sensor 3 is a CMOS image sensor with a color filter array, and the CMOS image sensor with a color filter array is a CMOS image sensor in which a color filter 8 is directly plated on each pixel of a pixel array of the CMOS image sensor 3. That is, the CMOS image sensor is composed of an array of pixels, on each of which a color filter 8 is directly plated, and each pixel corresponds to a minute color filter 8. That is, the pixel array of the CMOS image sensor 3 is coated with a plurality of minute color filters 8 arranged in an array.

As shown in fig. 1, the oral cavity observation instrument is provided with a USB interface 6, and can be connected with a computer through the USB interface 6.

As shown in fig. 1, an ISP image processing chip 6, a CPU central processing unit, and a display output module are disposed on the PCB 5; the CMOS image sensor 3 is respectively connected with a central processing unit on the PCB circuit board 5 and a signal input port of the ISP image processing chip 6; the image capturing button 4 is respectively connected with a central processing unit on the PCB circuit board 5 and a signal output port of the ISP image processing chip 6; the display output module on the PCB 5 is connected with the USB interface 7.

The image capturing button 4 is a double-key image capturing button.

The model number of the ISP image processing chip 6 is FH 8510.

The multispectral oral cavity observer based on the CMOS array filter reduces the generation of moire and mottle by adopting the CMOS image sensor with the color filter arranged in the enhanced array; the lens does not require an optical low pass filter, allowing the sensor to capture the full, "unfiltered" resolution and fine image quality of the XF lens.

In the prior art, only one or two kinds of light, such as visible light and blue light, can be generally obtained by adopting a mode that a VCM zoom lens and a common CMOS image sensor work in a matched mode. And adopt the utility model provides a mode of this kind of VCM zoom lens and the CMOS image sensor cooperation work of color filter array can realize obtaining from blue light to infrared equal multispectral.

Claims

1. A multispectral oral cavity observation instrument based on CMOS array filter is characterized in that the multispectral oral cavity observation instrument comprises a camera shooting handle; the front end of the camera shooting handle is provided with a lens base, the front end of the lens base is provided with a VCM zoom lens, and the rear end of the lens base is provided with a CMOS image sensor; a PCB circuit board with image acquisition, processing and transmission functions is arranged in the camera shooting handle; the VCM zoom lens is connected with the PCB circuit board through the CMOS image sensor; the camera shooting handle is provided with an image capturing button, and the image capturing button is connected with the PCB; the CMOS image sensor with the color filter array is a CMOS image sensor with the color filter array, and the CMOS image sensor with the color filter array is a CMOS image sensor with the color filter directly plated on each pixel of a pixel array of the CMOS image sensor; that is, the CMOS image sensor is composed of an array of pixels, on each of which a color filter is directly plated, one minute color filter for each pixel.

2. The CMOS array filter based multispectral oral viewer of claim 1, wherein an ISP image processing chip is disposed on the PCB circuit board; the VCM zoom lens is connected with an ISP image processing chip on the PCB circuit board through the CMOS image sensor.

3. The CMOS array filter based multispectral oral viewer of claim 1 or claim 2, wherein the oral viewer has a USB interface, and is connectable to a computer or a display via the USB interface.

4. The CMOS array filter based multispectral oral viewer of claim 3, wherein said PCB board comprises a CPU, an ISP image processing chip, a display output module; the CMOS image sensor is respectively connected with a central processing unit on the PCB circuit board and a signal input port of the ISP image processing chip; the image capturing button is respectively connected with a central processing unit on the PCB circuit board and a signal output port of the ISP image processing chip; and the display output module on the PCB is connected with the USB interface.

5. The CMOS array filter based multispectral oral viewer of claim 1 or claim 2, wherein the image capture button is a two-button image capture button.